Shuttle box for looms



Jan. 18, 1938. w. H. BAHAN SHUTTLE BOX FOR LOOMS Filed Sept. 30, 1935 4 Sheets-Sheet l 1 WILLIAM HBnHnN Jan. 18, 1938.

SHUTTLE BOX FOR LOOMS Filed Sept. 30, 1935 4 Sheets-Sheet 2 3mm! WILLIAM H. BAHRN 8% Mar w. H. BAHAN 2,105,578

Jan. 18, 1938. w. H. BAHAN SHUTTLE BOX FOR LOOMS Filed Sept. 30, 1935 4 Sheets-Sheet 4 awe/whom:

WILL/Am H. BHHQN 1 ww gm 6% V S 8 p Y 3 5 8 1w m m L w 9 i a I 1 lHl-H. i w 8 am a 4 s mm lfimmw v 4 Patented Jan. 18, 1938 STATES PATENT OFFICE Application September 4 Claims.

This invention relates to a shuttle box construction for looms and more especially to a shuttle box equipped with means for frictionally engaging the side of the shuttle as it is thrown 5 into the box and stopping it in the proper position, and therefore, dispensing with the usual check strap. This invention makes it possible for the shuttle to be properly located at the time it is thrown into the box in proper contact with the picker so that the impact delivered thereto by the picker will be uniform.

In the conventional shuttle box the shuttle enters the loom and rebounds a certain amount. Since this rebound is not uniform, the impact or blow delivered to the end of the shuttle by the picker will Vary from time to time, thereby causing a mis-pick, pick-outs and other imperfections. By equipping one side of the shuttle box with a movable lining which is normally adapted to be engaged by the shuttle and by having an eccentric pivotally mounted in one side of the shuttle box for causing this movable lining to engage the shuttle, it is possible to cause the shuttle to stopalmost in the same position in the shuttle box at each pick of the loom.

It is, therefore, an object of this invention to provide a shuttle box for each end of the lay of a loom having one side thereof equipped with a movable lining for engaging the sides of the shuttle as it enters the loom and means controlled by the movement of the shuttle for producing friction between the side of the shuttle and the movable'lining. When the shuttle is thrown from the shuttle box means are also provided for returning the movable lining to its original position so that it will again be engaged by the shuttle when it is thrown again into the shuttle box.

By using this movable lining together with the eccentric as shown in the drawings, I have found that it has been possible to operate the loom at a much higher'rate of speed than was possible by using the old type of shuttle box. This increase in the number of picks is due primarily to the fact that the shuttle is'not allowed to rebound a sufficient amount in the box to materially affect the operation of the picker, and therefore, there need not be the appreciable pause now present in looms to allow the shuttle to assume a position of rest before the picker is operated.

It is a further object of this invention to provide a' combined shuttle engaging means, for maintaining the shuttle in the proper position in the shuttle box, and a picker stick check. Not only does this movable lining serve as a shuttle engaging, means, but it also serves as a picker 30, 1935, Serial No. 42,914

stick check thereby making it possible to eliminate the conventional check strap for this purpose.

It is a further object of this invention to provide a shuttle box construction which has mounted in the pivotal binder on one side thereof, an eccentric resilient cam for engaging the side of the shuttle to maintain the same in its proper position when it is thrown intothe shuttle box. In this type of the invention no strap is used but the action of the resilient leather covered eccentric is depended upon to produce the necessary friction and prevent vibration of the shuttle to insure the proper stability.

Another object of this invention is to provide a shuttle box for each end of the lay of a loom having one side thereof equipped with a movable lining for engaging the sides of the shuttle as it enters the loom and means controlled by the movement of the shuttle for producing the friction between the sides of the shuttle and movable lining, said means being adjustably secured preferably to the lay of the loom. By adjustably securing the controlling means to the lay of the loom a very stable construction is provided, and the movement of the pivoted binder as in the case of the other showing, does not affect the frictional or the shuttle engaging means.

A still further object of the invention is to provide a shuttle box construction comprising a resilient eccentric cam mounted in an adjustable bracket, said bracket being mounted on the lay of the loom. This form is similar to another form shown in the drawings with the exception of the means for mounting the eccentric. In this case the eccentric is mounted on an adjustable bracket instead of being mounted in the pivoted binder.

Some of the objects of the invention having been stated, other objects will appear as the description proceeds when taken in connection with the accompanying drawings, in which:

Figure 1'is a plan view of one end of the lay of a loom showing the invention applied thereto;

Figure 2 is a rear elevation taken along line 22 in Figure 1;

Figure 3 is a transverse sectional view taken along line 3-3 in Figure 1;

Figure 4 is an elevation taken along line 4-4 in Figure 1;

Figure 5 is a transverse sectional view taken along line 5-5 in Figure 1;

Figure 6 is a plan view of the right-hand portion of Figure 1 showing the shuttle removed therefrom with the parts in a different position;

Figure '7 is an isometric view of the pivoted back binder of the box construction;

Figure 8 is an isometric View looking at the back side of Figure 7;

Figure 9 is a plan view of another modified form showing the resilient eccentric cam adjustably secured to the lay of the loom;

Figure 10 is a cross-sectional View taken along line l5l5 in Figure 9;

Figure 11 is a plan view of still another modified form; and

Figure 12 is an isometric view of the eccentric cam and the adjustable bracket shown in Figure 11.

Referring more particularly to the drawings, the numeral ill denotes the lay of a loom which has mounted on the upper side thereof a lay cap Hla. The lay cap supports the conventional box front l I which, in turn, has secured to the inner side thereof a' strap of leather I2 for engaging the side of shuttle 23 when it isthrown into the shuttle box. The lay cap lilo has a longitudinal slot lfib in the central portion thereof through which projects a picker stick. 14 having a picker E5 on the upper end thereof for del vering an impact to the end of shuttle l 3 to cause the same to be thrown to the other side of the loom.

The structure thus far described is conventional but it is thought necessary to makea showing of this in order to efi'ectively disclose the present invention. Pivotally secured as at H is a back piece or binder l8 which has securedv to approximately one half of the free end thereof a leather lining 26. This lining 2b cooperateswith the lining 52 to provide a lining for the shuttle box for receiving the shuttle l3. Secured to the back side of member i8 is a wearing member 21 such as leather, which is normally engaged by resilient arm 22 said arm being pivotally secured as at 23 to a bracket 2a. In order to normally hold the free end of arm 22 into engagement with member 2! a torsion spring 25 is provided. This arm and its associated parts are conventional, and serve to cause the back side wall of theshuttle box to engage the shuttle to produce a certain amount of friction and resiliency.

In order to limit the pivotal movement of binder it about pivot point I! a bracket is secured in the lay l0, said bracket having threadably secured in the upper end thei'eof a bolt 3! with a resilient tip 32 on the end thereof. The tip 32 is held in the proper position by means of lock nut 33 and this tip serves to limit the outward pivotal movement of binder l3., Heretofore, when the torsion spring 25 has become weak the pivota1 movement of the binder 16 or a similar memher with which the arm 22 hasworked a greater amount of outward rotation has been allowed than has been necessary thereby causing the shuttle is to vibrate in the shuttle box. Furthermore, screw 3! insures proper friction being applied to the shuttle to properly and quickly box which lining cooperates with lining 29 on the same side of the shuttle box. The other end of A movable lining 3% extends to'the right, (Figs. 1 and 6), across slot liib and behind the picker I5 and has one end thereof secured as at 44. to bracket 45, said bracket 45 being secured to the lay cap lfla.

When the shuttle l3, under the impact delivered by the picker stick at the other end of the loom, is driven to the position shown in Figure 1 the side adjacent the movable lining 39 is. caused to engage the lining. The friction produced between the lining and the side of the shuttle will cause the eccentric 3! to rotate about its pivot point 36. The greater the blow given to the shuttle I3 the more counter-clockwise rotation will be caused in the eccentric 3'! thereby causing the friction of the lining 39 on the side of the shuttle 83 to be increased. Also when the shuttle engages the picker and moves the picker against the strap 39, increased force will be applied to eccentric 31 and the force of the moving shuttle will positively move the eccentric and further grip the shuttle. It is evident that after the picker l5 engagesthe end of shuttle l3 and throws it from the shuttle box, that the spring 4| will return the eccentric 3'1 and its associated parts back to normal position as shown in Figure 6.

By providing the resilient eccentric 31 in the pivoted member 18 the shuttle will engage the lining 39 and be immediately clamped in position thereby eliminating the vibration or oscillation of the shuttle which has heretofore taken place in the shuttle boxes. The strap 39 also serves as a picker stick check since the backward movement of the picker stick will be resisted by the spring 4| and the friction of the strap on the shuttle.

Figures 9 and 10 show another modified form which is similar in many respects to the form shown in Figures 1 to 3 inclusive, and like reference characters will apply to like parts. The principaldifierence between these two forms is, that in the present form the resilient eccentric cam 3'! is pivoted as at 80 to the upper portion of bracket 8!. The lower side of bracket 81 is serrated and is adapted to rest upon a serrated face of bracket 82 and is adjustably secured thereto by any suitable means such as stud bolts 83 which penetrate slots 84 in the outstanding leg of said bracket 8| It is seen that by mounting the bracket in this manner, instead of placing it in the pivoted binder l8, that adjustment can be made as to the amount of friction desired and as to the proximity of resilient eccentric cam 31 and lining 39 to. the shuttle to thereby control the friction. By having the bracket fastened to the back side of the lay it makes a very strong and stable check and adjustment can be easily made. Also the wear on the binder will not be nearly so great as it is when the binder contains the movable check lining' Figure 11 is another modified form in which the resilient cam 50 and leaf spring 56 are mounted upon an adjustable bracket which is secured to the lay of the loom. The cam 50 is pivotally mounted as at 86 in the upper side of bracket 8| a. This bracket is similar in all respects to bracket 81 with the addition of the projection 81 which extends laterally therefrom to which spring 56 is normally secured. This spring contacts the cam 50 in the same manner as shown and described in Figure 9. Likewise, in this form, by having the cam on a stationary bracket adjustably secured to the lay a more stable con-' struction is provided and less wear is produced onthe pivoted binder. The eccentric 52, as appearing in Fig. 11, has

a leather cover 52, and the eccentric has secured as at 53 a tension spring 54 which has its other end secured as at 55 to the binder Hi. In order to prevent the eccentric from vibrating or oscillating after the shuttle has been thrown into the shuttle box, a leaf spring 56 is provided which has one end thereof secured to brackets 81, with its free end frictionally engaging the side of the eccentric. Leaf spring 56 and tension spring 54 normally hold eccentric 50 in the dotted line position when the shuttle is not in the shuttle box. When the shuttle enters the shuttle box the side of the shuttle engages portion 52 and rotates the eccentric to the bold line position. By positioning leaf spring 56 in the manner shown, it is evident that the further the shuttle enters the box the greater resistance spring 56 will offer, thereby causing the resistance to the travel of the shuttle to be in direct proportion to the speed thereof.

In the drawings and specification there has been set forth a preferred embodiment of the invention, and although specific terms are employed, they are used in a generic and descriptive sense only and not for purposes of limitation, the scope of the invention being set forth in the appended claims.

I claim:

1. In a loom having a lay and a shuttle box and a picker to receive the impact of the incoming shuttle and also to propel the shuttle out of the shuttle box, said box having front and rear sidewalls, one of the side walls having a recess therein, an eccentric member mounted for rotation in said recess, a flexible member secured to said eccentric and extending along the inner surface of one of the side walls and having one of its ends extending across the path of the picker whereby engagement of the picker by the shuttle will move the eccentric to exert pressure on the shuttle to stop the same.

2. In a loom having a lay and a shuttle box provided with a box front and a pivoted binder and a picker, said binder having a transversely disposed opening therethrough, a resilient eccentric member mounted in said opening, tension means normally holding the eccentric memher out of the path of the shuttle as it enters the box, a lining secured to said eccentric member near one end thereof and extending along the inner surface of the binder and traversing the path of the picker and having its other end secured to the lay, whereby engagement of the lining by the picker will move the eccentric to grip the side of the shuttle and stop the same.

3. In a shuttle box for looms having a box front and a binder, a picker and picker stick for arresting and expelling the shuttle received into the box, an eccentric member disposed in one of the sidewalls of the box, and a movable lining for the shuttle box secured to and covering said eccentric and extending rearwardly along one of the sidewalls of the shuttle box and across the path travelled by the picker and engageable by the picker for moving the eccentric into engagement with the side of the shuttle for stopping a the same.

4. In a loom lay having a shuttle box provided with a binder and a box front forming a space for the reception of a shuttle, a picker and picker stick mounted for reciprocatory movement in said space, said binder having a recess therein, an eccentric member mounted in said recess, a strap secured to said eccentric and extending outwardly along the sidewall of the binder and across the path travelled by the picker and picker stick and being secured to the lay whereby the force applied to the picker by an incoming shuttle will move the eccentric to apply gradually increasing pressure to the shuttle as it travels in the box.

WILLIAM H. BAHAN.

CERTIFICATE OF CORRECTION.

Patent No, 2,105,578., January 18, 1928.

WILLIAM H. BAHAN.

It is hereby certified that error a ppears in the above numbered patent requiring correction as follows: In the drawings, strike out Sheet 5; figures 1h, 15, 16 and 17 should appear as figures 9, 10, 11 and 12 respectively; and in the heading to the drawings, line 3, for L Sheets" read 5 Sheets; and that the said Letters Patent shouldbe read with these corrections therein that the same may conform to the record of the case in the Patent Office,

Signed and sealed this 15th day of March, A. D. 1958.

Henry Van Arsdale, (seal) Acting Commissioner of Patent 

